Wire-stretcher.



PATENTED APR. 9, 1907.

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`WIRE-STRETCHER` Specification of Letters Patent.

Patented. April 9, 1907.

y 1 Application filed December 18, 1906. lSerial No. 348,388.

To all whom it may concern: Be it known that I, CHARLEY P. MOORE, a

citizen of the United States, residing at Sar.

dis, in the county of Henderson and State of Tennessee, have Ainvented certain new and useful Improvements in VVire-Stretchers; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use same, reference being fhad to the accompanying drawings, and to the letters and fig'- ures of reference marked thereon, which form a part of this speci'lication.

This invention relates to new and useful improvements in wire-stretchers, and comprises, essentially, a ratchet-bar adapted to have a longitudinal movement in recessed plates and a rocking beam carrying dogs with recessed ends designed to engage the notches of the bar, whereby the latter may be given an intermittent longitudinal movement, and in the provision of clamping means connected to the plates.

My invention is illustrated in the accompanying drawings, in whiclri Figure l is a perspective view of my improved wire-stretcher. Fig. 2 is a sectional view showing the clamping relation between,

the rollers and Fig. 3 is a detail view of one of the dogs, showing the recessed hooked end. Fig. 4 is a cross-sectional view through the plates, showing the recesses therein.

Reference now being had to the details of the drawings by letter, A A designate two plates wwhich have central recesses formed therein in which the ratchet-bar B is adapted to be guided. Said bar has teeth B/ upon its opposite edges, and C designates a rocking beam pivotally mounted upon the pins C carried by said plates, and l) designates two dogs, the bifurcated ends of which are pivotally connected to said rocking beam, and the ends of said dogs are hooked and adapted to engage the teeth upon the opposite edges of said ratchet-bar. Each hooked end of the dogs is recessed, as at H, forming means whereby the dogs maybe guided as they are moved alternately forward, the recessed portion fitting over the opposite edges of the ratchet-bar. Springs N connect the two dogs and are adapted to hold the hooked ends thereof in engagement with the notched edges of the ratchet-bar. Suitable handles J are fastened to the ends of said rocking beam, whereby the samemay be conveniently operated. Fastened to said plates are the rods Q, the rear ends of which are fastened to an elliptical-shaped clamping member R, which ratchet-bar is guided asit is moved longitudinally. Pivotally mounted upon the pins S, which project from .the filling-blocks I, mounted within said member R, are the links L, and M designates a second elliptical clam ing member, similar in construction to t e member which is connected to said rods, and a filling-block in said member M is provided with pins M', to which said links are pivotally connected. f

From the foregoing construction it will be noted, when taken in connection with the drawings, that the clamping member M is allowed a swinging movement, while the member connected to said rods is stationary. It will also be noted that when the clamping member M is swung laterally a portion of the circumference thereof may be brought into clamping relation with the circumference of the stationary clamping member, and the stronger the pull upon the stretching device the more securely will the two clamping members contact frictionally with each other and between which members the wire adapted to be stretched is held frictionally.

One end of the stretching device being attached to a post or other stationary object and the wire fabric placed between the clamping members, the apparatus is in readiness for operation. By rocking the beam carrying the dogs it will be noted that the hooked ends of the dogs will alternately engage the teeth or notches upon the outeredges of the ratchet-bar and cause a 'step-by-step movement to be imparted longitudinally to the latter, thus causing the fabric to be stretched to the required tension.

What I claim is A wire-stretcher comprising a ratchet-bar with notches upon the opposite edges therehas a strap R thereon, through which said IOO of, plates between .which said bar is guided, a said dogs, and clamping members connected rocking beam pivotally mounted upon said to said plates, as set forth. 1o plates, dogs pvotally connected to said beam In testimony whereof I hereunto alhxfvmy and having hooked ends which are grooved signaturein the presence of two Witnesses.

and adapted to engage one over each notched @HARLEY P. MOORE. edge of said bar and be guided thereon by the Witnesses:

grooves engaging over the edges of the bar E. H. STEWART,

intermediate the notches, springs connecting S. H. BRAZELTON. 

